Shimano RD-M3020-8 Acera SGS 7/8-Speed Direct Attachment Rear Derailleur

• Cage length: SGS/Long
• Total capacity: 45T
• Max front difference: 20T
• Mount: Direct attachment (conventional)
• Number of pulley teeth: 11T
• Max low sprocket: 40T
• Min low sprocket: 30T
• Rear speeds: 7/8
• Top normal spring type: Double servo